keyword
MENU ▼
Read by QxMD icon Read
search

Implicit memory

keyword
https://www.readbyqxmd.com/read/28212388/multiple-processes-in-two-dimensional-visual-statistical-learning
#1
Eiichi Hoshino, Ken Mogi
Knowledge about the arrangement of visual elements is an important aspect of perception. This study investigates whether humans learn rules of two-dimensional abstract patterns (exemplars) generated from Reber's artificial grammar. The key question is whether the subjects can implicitly learn them without explicit instructions, and, if so, how they use the acquired knowledge to judge new patterns (probes) in relation to their finite experience of the exemplars. The analysis was conducted using dissimilarities among patterns, which are defined with n-gram probabilities and the Levenshtein distance...
2017: PloS One
https://www.readbyqxmd.com/read/28202719/sleep-enhances-knowledge-of-routes-and-regions-in-spatial-environments
#2
Hannes Noack, Wiebke Schick, Hanspeter Mallot, Jan Born
Sleep is thought to preferentially consolidate hippocampus-dependent memory, and as such, spatial navigation. Here, we investigated the effects of sleep on route knowledge and explicit and implicit semantic regions in a virtual environment. Sleep, compared with wakefulness, improved route knowledge and also enhanced awareness of the semantic regionalization within the environment, whereas signs of implicit regionalization remained unchanged. Results support the view that sleep specifically enhances explicit aspects of memory, also in the spatial domain...
March 2017: Learning & Memory
https://www.readbyqxmd.com/read/28193311/voluntary-and-involuntary-imagery-in-social-anxiety
#3
Sophie R Homer, Catherine Deeprose
BACKGROUND: Negative mental imagery is ubiquitous in cognitive models of social anxiety and in the social anxiety literature. Previous research has shown that it is causal of increased anxiety, lower social performance ratings and lower implicit self-esteem. Despite its prevalence, few studies have investigated this imagery directly. AIMS: This study aimed to provide an in-depth analysis of the phenomenology of negative imagery experienced by socially anxious individuals, and to compare recurrent and intrusive images with images deliberately generated by participants during the study...
February 14, 2017: Behavioural and Cognitive Psychotherapy
https://www.readbyqxmd.com/read/28160511/efficient-gaussian-density-formulation-of-volume-and-surface-areas-of-macromolecules-on-graphical-processing-units
#4
Baofeng Zhang, Denise Kilburg, Peter Eastman, Vijay S Pande, Emilio Gallicchio
We present an algorithm to efficiently compute accurate volumes and surface areas of macromolecules on graphical processing unit (GPU) devices using an analytic model which represents atomic volumes by continuous Gaussian densities. The volume of the molecule is expressed by means of the inclusion-exclusion formula, which is based on the summation of overlap integrals among multiple atomic densities. The surface area of the molecule is obtained by differentiation of the molecular volume with respect to atomic radii...
February 4, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28138830/attempts-to-suppress-episodic-memories-fail-but-do-produce-demand-evidence-from-the-p300-based-complex-trial-protocol-and-an-implicit-memory-test
#5
Anne C Ward, J Peter Rosenfeld
Instructions to voluntarily suppress memories of a mock crime have been reported to result in decreased P300 amplitude during a P300-based concealed information test (CIT) and reduced autobiographical Implicit Association Test (aIAT) D scores, supporting successful suppression. However, one such study, (Hu et al., Psychological science 26(7):1098-1106, 2015) used the P300-based Complex Trial Protocol with a 50-50 target to nontarget ratio, which could impose much response switching and thereby drain cognitive resources, also resulting in reduced P300...
January 30, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/28131874/implicit-activation-of-the-aging-stereotype-influences-effort-related-cardiovascular-response-the-role-of-incentive
#6
Athina Zafeiriou, Guido H E Gendolla
Based on previous research on implicit effects on effort-related cardiovascular response and evidence that aging is associated with cognitive difficulties, we tested whether the mere activation of the aging stereotype can systematically influence young individuals' effort-mobilization during cognitive performance. Young participants performed an objectively difficult short-term memory task during which they processed elderly vs. youth primes and expected low vs. high incentive for success. When participants processed elderly primes during the task, we expected cardiovascular response to be weak in the low-incentive condition and strong in the high-incentive condition...
January 26, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28121017/information-theoretic-properties-of-auditory-sequences-dynamically-influence-expectation-and-memory
#7
Kat Agres, Samer Abdallah, Marcus Pearce
A basic function of cognition is to detect regularities in sensory input to facilitate the prediction and recognition of future events. It has been proposed that these implicit expectations arise from an internal predictive coding model, based on knowledge acquired through processes such as statistical learning, but it is unclear how different types of statistical information affect listeners' memory for auditory stimuli. We used a combination of behavioral and computational methods to investigate memory for non-linguistic auditory sequences...
January 25, 2017: Cognitive Science
https://www.readbyqxmd.com/read/28116810/can-implicit-associations-distinguish-true-and-false-eyewitness-memory-development-and-preliminary-testing-of-the-iate
#8
Rebecca K Helm, Stephen J Ceci, Kayla A Burd
Eyewitness identification has been shown to be fallible and prone to false memory. In this study we develop and test a new method to probe the mechanisms involved in the formation of false memories in this area, and determine whether a particular memory is likely to be true or false. We created a seven-step procedure based on the Implicit Association Test to gauge implicit biases in eyewitness identification (the IATe). We show that identification errors may result from unconscious bias caused by implicit associations evoked by a given face...
January 23, 2017: Behavioral Sciences & the Law
https://www.readbyqxmd.com/read/28115055/dyslexics-faster-decay-of-implicit-memory-for-sounds-and-words-is-manifested-in-their-shorter-neural-adaptation
#9
Sagi Jaffe-Dax, Or Frenkel, Merav Ahissar
Dyslexia is a prevalent reading disability whose underlying mechanisms are still disputed. We studied the neural mechanisms underlying dyslexia using a simple frequency-discrimination task. Though participants were asked to compare the two tones in each trial, implicit memory of previous trials affected their responses. We hypothesized that implicit memory decays faster among dyslexics. We tested this by increasing the temporal intervals between consecutive trials, and by measuring the behavioral impact and ERP responses from the auditory cortex...
January 24, 2017: ELife
https://www.readbyqxmd.com/read/28114605/auditory-stimulus-processing-and-task-learning-are-adequate-in-dyslexia-but-benefits-from-regularities-are-reduced
#10
Luba Daikhin, Ofri Raviv, Merav Ahissar
Purpose: The reading deficit for people with dyslexia is typically associated with linguistic, memory, and perceptual-discrimination difficulties, whose relation to reading impairment is disputed. We proposed that automatic detection and usage of serial sound regularities for individuals with dyslexia is impaired (anchoring deficit hypothesis), leading to the formation of less reliable sound predictions. Agus, Carrión-Castillo, Pressnitzer, and Ramus, (2014) reported seemingly contradictory evidence by showing similar performance by participants with and without dyslexia in a demanding auditory task that contained task-relevant regularities...
January 18, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28077270/instructions-to-suppress-semantic-memory-enhances-or-has-no-effect-on-p300-in-a-concealed-information-test-cit
#11
J Peter Rosenfeld, Anne Ward, Jesse Drapekin, Elena Labkovsky, Samuel Tullman
The present study investigated the extent to which people can suppress semantic memory as indexed with the P300 ERP and the autobiographical implicit association test (aIAT). In EXP 1, participants (22) were run in a counterbalanced repeated measures study in both simply knowledgeable (SK) and knowledgeable with suppression (SP) conditions. A P300-based, concealed information test ("Complex Trial Protocol"; CTP) with a 50/50 Target/Nontarget (T/NT) ratio was given both with and without instructions to suppress semantic memories...
January 7, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28057452/stimulating-cognition-in-schizophrenia-a-controlled-pilot-study-of-the-effects-of-prefrontal-transcranial-direct-current-stimulation-upon-memory-and-learning
#12
Natasza D Orlov, Derek K Tracy, Daniel Joyce, Shinal Patel, Joanna Rodzinka-Pasko, Hayley Dolan, John Hodsoll, Tracy Collier, John Rothwell, Sukhwinder S Shergill
BACKGROUND: Schizophrenia is characterized by prominent cognitive deficits, impacting on memory and learning; these are strongly associated with the prefrontal cortex. OBJECTIVE/HYPOTHESIS: To combine two interventions, transcranial direct current stimulation (tDCS) over the prefrontal cortex and cognitive training, to examine change in cognitive performance in patients with schizophrenia. METHODS: A double blind, sham-controlled pilot study of 49 patients with schizophrenia, randomized into real or sham tDCS stimulation groups...
December 28, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28031034/uqlust-combining-profile-hashing-with-linear-time-ranking-for-efficient-clustering-and-analysis-of-big-macromolecular-data
#13
Rafal Adamczak, Jarek Meller
BACKGROUND: Advances in computing have enabled current protein and RNA structure prediction and molecular simulation methods to dramatically increase their sampling of conformational spaces. The quickly growing number of experimentally resolved structures, and databases such as the Protein Data Bank, also implies large scale structural similarity analyses to retrieve and classify macromolecular data. Consequently, the computational cost of structure comparison and clustering for large sets of macromolecular structures has become a bottleneck that necessitates further algorithmic improvements and development of efficient software solutions...
December 28, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/28017977/reversing-implicit-first-impressions-through-reinterpretation-after-a-two-day-delay
#14
Thomas C Mann, Melissa J Ferguson
People are adept at forming impressions of others, but how easily can impressions be updated? Although implicit first impressions have been characterized as difficult to overturn, recent work shows that they can be reversed through reinterpretation of earlier learning. However, such reversal has been demonstrated only in the same experimental session in which the impression formed, suggesting that implicit updating might be possible only within a brief temporal window, before impressions are consolidated and when memory about the initial information is strongest...
January 2017: Journal of Experimental Social Psychology
https://www.readbyqxmd.com/read/28009076/brain-regions-that-show-repetition-suppression-and-enhancement-a-meta-analysis-of-137-neuroimaging-experiments
#15
Hongkeun Kim
Repetition suppression and enhancement refer to the reduction and increase in the neural responses for repeated rather than novel stimuli, respectively. This study provides a meta-analysis of the effects of repetition suppression and enhancement, restricting the data used to that involving fMRI/PET, visual stimulus presentation, and healthy participants. The major findings were as follows. First, the global topography of the repetition suppression effects was strikingly similar to that of the "subsequent memory" effects, indicating that the mechanism for repetition suppression is the reduced engagement of an encoding system...
December 23, 2016: Human Brain Mapping
https://www.readbyqxmd.com/read/27999558/an-embodied-approach-to-understanding-making-sense-of-the-world-through-simulated-bodily-activity
#16
REVIEW
Firat Soylu
Even though understanding is a very widely used concept, both colloquially and in scholarly work, its definition is nebulous and it is not well-studied as a psychological construct, compared to other psychological constructs like learning and memory. Studying understanding based on third-person (e.g., behavioral, neuroimaging) data alone presents unique challenges. Understanding refers to a first-person experience of making sense of an event or a conceptual domain, and therefore requires incorporation of multiple levels of study, at the first-person (phenomenological), behavioral, and neural levels...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27990266/breeding-novel-solutions-in-the-brain-a-model-of-darwinian-neurodynamics
#17
András Szilágyi, István Zachar, Anna Fedor, Harold P de Vladar, Eörs Szathmáry
Background: The fact that surplus connections and neurons are pruned during development is well established. We complement this selectionist picture by a proof-of-principle model of evolutionary search in the brain, that accounts for new variations in theory space. We present a model for Darwinian evolutionary search for candidate solutions in the brain. Methods: We combine known components of the brain - recurrent neural networks (acting as attractors), the action selection loop and implicit working memory - to provide the appropriate Darwinian architecture...
2016: F1000Research
https://www.readbyqxmd.com/read/27942426/urdu-nasta-liq-text-recognition-using-implicit-segmentation-based-on-multi-dimensional-long-short-term-memory-neural-networks
#18
Saeeda Naz, Arif Iqbal Umar, Riaz Ahmed, Muhammad Imran Razzak, Sheikh Faisal Rashid, Faisal Shafait
The recognition of Arabic script and its derivatives such as Urdu, Persian, Pashto etc. is a difficult task due to complexity of this script. Particularly, Urdu text recognition is more difficult due to its Nasta'liq writing style. Nasta'liq writing style inherits complex calligraphic nature, which presents major issues to recognition of Urdu text owing to diagonality in writing, high cursiveness, context sensitivity and overlapping of characters. Therefore, the work done for recognition of Arabic script cannot be directly applied to Urdu recognition...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27936434/mineralocorticoid-receptor-haplotype-estradiol-progesterone-and-emotional-information-processing
#19
Danielle A Hamstra, E Ronald de Kloet, Ina Quataert, Myrthe Jansen, Willem Van der Does
BACKGROUND: Carriers of MR-haplotype 1 and 3 (GA/CG; rs5522 and rs2070951) are more sensitive to the influence of oral contraceptives (OC) and menstrual cycle phase on emotional information processing than MR-haplotype 2 (CA) carriers. We investigated whether this effect is associated with estradiol (E2) and/or progesterone (P4) levels. METHOD: Healthy MR-genotyped premenopausal women were tested twice in a counterbalanced design. Naturally cycling (NC) women were tested in the early-follicular and mid-luteal phase and OC-users during OC-intake and in the pill-free week...
February 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27932941/long-term-memory-for-noise-evidence-of-robust-encoding-of-very-short-temporal-acoustic-patterns
#20
Jayalakshmi Viswanathan, Florence Rémy, Nadège Bacon-Macé, Simon J Thorpe
Recent research has demonstrated that humans are able to implicitly encode and retain repeating patterns in meaningless auditory noise. Our study aimed at testing the robustness of long-term implicit recognition memory for these learned patterns. Participants performed a cyclic/non-cyclic discrimination task, during which they were presented with either 1-s cyclic noises (CNs) (the two halves of the noise were identical) or 1-s plain random noises (Ns). Among CNs and Ns presented once, target CNs were implicitly presented multiple times within a block, and implicit recognition of these target CNs was tested 4 weeks later using a similar cyclic/non-cyclic discrimination task...
2016: Frontiers in Neuroscience
keyword
keyword
50149
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"